BHWWAll I have to say is I'm sure I saw this movie once before I ever saw the MST3K version (I also saw Squirm a couple of times years before on some part of the hinterlands of cable tv channels) and it impressed me with how utterly sleazy it is.

And one of my favorite lines from the MST3K version, after creepy Dr. Ted has invited those two ladies into his car, and made some quip about being safe with him

Mike: "Heh heh heh, have you seen Frankenhooker?"

Interestingly enough, Frankenhooker director Frank Henenlotter claimed The Brain That Wouldn't Die to be an inspiration for that film. Also, Jason (Dr. Ted Cortner) Evers had a role in an early Henenlotter film, Basket Case 2 (i.e. the sequel to the movie about the deformed separated Siamese twin on a murder rampage)